<?php

class NoteController extends Controller {

    /**
     * @var string the default layout for the views.
     */
    public $layout = '//layouts/preview';

    /**
     * @return array action filters
     */
    public function filters() {
        return array(
            'accessControl', // perform access control for CRUD operations
        );
    }

    /**
     * Specifies the access control rules.
     * This method is used by the 'accessControl' filter.
     * @return array access control rules
     */
    public function accessRules() {
        return array(
            array('allow', // allow authenticated users to perform all actions
                'actions' => array('index', 'view', 'meta', 'create', 'update', 'delete', 'manage', 'viewPdf'),
                'users' => array('@'),
            ),
            array('deny', // deny all users
                'users' => array('*'),
            ),
        );
    }

    /**
     * Displays a particular model.
     * @param integer $id the ID of the model to be displayed
     */
    public function actionView($id) {
        $this->layout = '//layouts/default';

        $this->render('view', array(
            'model' => $this->loadModel($id),
        ));
    }

    /**
     * Creates a new model.
     * If creation is successful, the browser will be redirected to the 'view' page.
     */
    public function actionCreate() {
        $this->layout = '//layouts/default';

        $model = new Note;

        // Uncomment the following line if AJAX validation is needed
        // $this->performAjaxValidation($model);

        $transaction = $model->dbConnection->beginTransaction();

        if (isset($_POST['Note'])) {
            try
            {
                $model->attributes = $_POST['Note'];
                if ($model->save()) {
                    $transaction->commit();
                    $indexLink = CHtml::link('here', CController::createUrl('note/index'));
                    Yii::app()->user->setFlash('create-note-success', "Your note has been added. Click $indexLink to go back.");
                    $this->refresh();
                }
            }
            catch (Exception $e)
            {
                $transaction->rollBack();
            }
        }

        $this->render('create', array(
            'model' => $model,
        ));
    }

    /**
     * Updates a particular model.
     * If update is successful, the browser will be redirected to the 'view' page.
     * @param integer $id the ID of the model to be updated
     */
    public function actionUpdate($id) {
        $this->layout = '//layouts/default';

        $model = $this->loadModel($id);

        // Uncomment the following line if AJAX validation is needed
        // $this->performAjaxValidation($model);

        $transaction = $model->dbConnection->beginTransaction();

        if (isset($_POST['Note'])) {
            try
            {
                $model->attributes = $_POST['Note'];
                if ($model->save()) {
                    $transaction->commit();
                    $indexLink = CHtml::link('here', CController::createUrl('note/index'));
                    Yii::app()->user->setFlash('update-note-success', "Your note has been updated. Click $indexLink to go back.");
                    $this->refresh();
                }
            }
            catch (Exception $e)
            {
                $transaction->rollBack();
            }
        }

        $this->render('update', array(
            'model' => $model,
        ));
    }

    /**
     * Deletes a particular model.
     * If deletion is successful, the browser will be redirected to the 'index' page.
     * @param integer $id the ID of the model to be deleted
     */
    public function actionDelete($id) {
        if (Yii::app()->request->isPostRequest) {
            // we only allow deletion via POST request
            $this->loadModel($id)->delete();

            // if AJAX request (triggered by deletion via admin grid view), we should not redirect the browser
            if (!isset($_GET['ajax']))
                $this->redirect(isset($_POST['returnUrl']) ? $_POST['returnUrl'] : array('manage'));
        }
        else
            throw new CHttpException(400, 'Invalid request. Please do not repeat this request again.');
    }

    /**
     * Lists all models.
     */
    public function actionIndex() {
        $dataProvider = new CActiveDataProvider('Note', array(
            'criteria' => array(
                'condition' => 'create_user_id=:user',
                'params' => array(':user' => Yii::app()->user->id),
            ),
            'pagination' => array(
                'pageSize' => 20,
            )
        ));

        $this->render('index', array(
            'dataProvider' => $dataProvider,
        ));
    }

    /**
     * returns the current model information.
     */
    public function actionMeta($id) {
        $model = $this->loadModel($id);

        $this->renderPartial('meta', array(
            'model' => $model,
        ), false, true);
    }

    /**
     * Manages all models.
     */
    public function actionManage() {
        $this->layout = '//layouts/default';

        $model = new Note('search');
        $model->unsetAttributes(); // clear any default values

        if (isset($_GET['nb']))
            $model->note_book_id = $_GET['nb'];

        if (isset($_GET['Note']))
            $model->attributes = $_GET['Note'];

        $this->render('manage', array(
            'model' => $model,
        ));
    }

    /**
     * Returns the data model based on the primary key given in the GET variable.
     * If the data model is not found, an HTTP exception will be raised.
     * @param integer the ID of the model to be loaded
     */
    public function loadModel($id) {
        $model = Note::model()->findByPk((int) $id);
        if ($model === null)
            throw new CHttpException(404, 'The requested page does not exist.');
        return $model;
    }

    /**
     * Performs the AJAX validation.
     * @param CModel the model to be validated
     */
    protected function performAjaxValidation($model) {
        if (isset($_POST['ajax']) && $_POST['ajax'] === 'note-form') {
            echo CActiveForm::validate($model);
            Yii::app()->end();
        }
    }

    /**
     * Display the note in pdf format.
     */
    public function actionViewPdf($id) {
        require_once('/../vendors/tcpdf/config/lang/eng.php');
        require_once('/../vendors/tcpdf/tcpdf.php');

        $note = $this->loadModel($id);

        $outputPdf = new TCPDF();
        $outputPdf->setCreator($note->owner->username);
        $outputPdf->setAuthor($note->owner->username);
        $outputPdf->setTitle($note->title);
        $outputPdf->setSubject($note->title);
        $outputPdf->setKeywords('');
        $outputPdf->setHeaderData('', 0, $note->title, '');
        $outputPdf->setHeaderFont(array('helvetica', '', 8));
        $outputPdf->setFooterFont(array('helvetica', '', 6));
        $outputPdf->setMargins(15, 18, 15);
        $outputPdf->setHeaderMargin(5);
        $outputPdf->setFooterMargin(10);
        $outputPdf->setAutoPageBreak(true, 0);
        $outputPdf->setFont('dejavusans', '', 7);

        $outputPdf->AddPage();
        $outputPdf->writeHTML($note->content, true, false, true, false, '');
        $outputPdf->LastPage();

        $outputPdf->Output(trim($note->title) . '.pdf', 'I');
    }

}
